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首页> 外文期刊>Applied Engineering in Agriculture >EFFECT OF CORN PROCESSING AND WET DISTILLER'S GRAINS WITH SOLUBLES ON ODOROUS VOLATILE ORGANIC COMPOUND EMISSIONS FROM URINE AND FECES OF BEEF CATTLE
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EFFECT OF CORN PROCESSING AND WET DISTILLER'S GRAINS WITH SOLUBLES ON ODOROUS VOLATILE ORGANIC COMPOUND EMISSIONS FROM URINE AND FECES OF BEEF CATTLE

机译：玉米加工和湿蒸馏粒子的影响与牛牛尿液和粪便粪便挥发性有机化合物排放

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Wet distiller's grains with solubles (WDGS) are a common feed ingredient in beef feedlot diets but the high nitrogen content of these diets creates air quality issues, primarily due to the aromatic compounds emitted during protein fermentation. Use of high moisture corn (HMC) instead of dry-rolled corn (DRC) in cattle feedlot diets has been shown to reduce some odors associated with excess starch in cattle feedlot diets. We hypothesized that using HMC in place of DRC in diets containing WDGS would reduce some of the odors associated with WDGS-DRC diets. A 4 x 4 replicated Latin square with a 2 x 2 factorial arrangement of treatments was used. Diets contained either DRC or a 2:1 ratio of HMC and DRC, with WDGS at either 25% or 45% of the diet dry matter resulting in four treatments: DRC-25, HMC-25, DRC-45 and HMC-45. Odorous compounds were measured from feces and urine of cattle fed the four diets. Feces from cattle fed diets containing 45% WDGS had a higher flux of p-cresol (9.42 mu g m(-3) min(-1)), 4-ethyphenol (0.04 mu g m(-3) min(-1)), and total aromatic compounds (13.56 mu g m(-3) min(-1)) compared to feces from cattle fed 25% WDGS (3.38, 0.03, and 6.86 mu g m(-3) min(-1), respectively). Corn processing did not influence fecal odor flux. Urinary flux of odorous compounds was largely unaffected by corn processing method and only p-cresol (9.58 mu g m(-3) min(-1)), and total aromatic compounds (11.34 mu g m(-3) min(-1)) were higher for cattle fed 45% WDGS compared to cattle fed 25% WDGS (7.65 and 9.12 mu g m(-3) min(-1), respectively for p-cresol and total aromatics). Overall there were no significant differences in odor potential, as determined by odor activity value (OAV), for cattle fed diets containing HMC and DRC with either concentration of WDGS. From these results, we interpret that producers may feed diets containing HMC or DRC in combination with WDGS at inclusion rates up to 45% with only minimal impacts of air quality.
机译：湿蒸馏器的可溶物（WDG）的谷物是牛肉饲料饮食中的常见饲料成分，但这些饮食的高氮含量产生空气质量问题，主要是由于蛋白质发酵过程中发射的芳香族化合物。已经显示使用高水分玉米（HMC）代替干轧玉米（DRC）在牛饲料饮食中，以减少牛饲料饮食中与过量淀粉相关的一些气味。我们假设使用HMC代替含有WDG的饮食中的DRC将减少与WDGS-DRC饮食相关的一些气味。使用4 x 4复制的拉丁广场，使用了2×2因子处理的处理。饮食含有DRC或2：1的HMC和DRC的比例，WDG在25％或45％的饮食干物质中产生4种治疗：DRC-25，HMC-25，DRC-45和HMC-45。从喂养四种饮食的粪便和牛的粪便中测量异味化合物。含有45％wdgs的牛喂食牛的粪便具有较高的p-甲酚（9.42μmg（-3）min（-1）），4-乙烯酚（0.04 mm gm（-3）min（-1）），与饲喂25％WDG的牛（3.38,0.03和6.86μg（-3）min（-1）分别）相比，总芳族化合物（13.56μmg（-3）min（-3）分钟（-3））相比，与牛饲喂25％（3.38,0.3））。玉米加工不会影响粪便气味。气味化合物的尿焊剂大大不受玉米加工方法的影响，并且仅P-甲酚（-3.58μm（-3）min（-1））和总芳族化合物（11.34μmg（-3）min（-1））与饲喂25％wdgs（7.65和9.12μm（-3）min（-1）分别用于p-甲酚和总芳烃的牛相比，饲喂45％wdgs的牛。总体而言，由于气味活性值（OAV）确定的牛喂食含有HMC和DRC的饮食，并且具有浓度的WDGS，因此对气味活性值（OAV）决定没有显着差异。从这些结果来看，我们解释生产者可以将含有HMC或DRC的饮食与WDG组合饲料，其含量高达45％，仅对空气质量的影响最小。

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